Activate the yeast in warm milk and a teaspoon of sugar until frothy. If using instant yeast, you can skip this step.
Add all the rest of the ingredients except the heavy cream listed under "For the Dough" into your bread machine and set it on in dough cycle until it doubles in size. You can knead the dough manually too.
Once the dough has doubled, punch and knead the dough. Roll it into a 12x18 inch rectangle.
Spread the Nutella evenly leaving a half inch on the longer side of the rolled dough. Sprinkle the chopped hazelnuts. Cut it into one and a half inch width strips.
Roll each strip into a coil and place in a prepared 9x9 baking dish. Prove for 40-45 minutes. Preheat the oven to 375 ℉. Drizzle the heavy cream on the rolls.
Bake for 22-24 minutes, until the bottom sounds hollow and rolls are golden.
In the meantime, prepare the nutella cream cheese frosting. Add the cream cheese, nutella, powdered sugar, vanilla, and butter into abowl and beat until fluffy.
Spread on top of the rolls if preferred
Serve as such or with milk, coffee, tea, nutella cocoa or hot cocoa.